The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Rio Vista you can figure out when it's the best time to plant bachelor buttons by looking at the USDA zone info.

Planting Calendar for Bachelor Buttons

Frost tolerance for bachelor buttons:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Bachelor Buttons tend to make it in moderate cold which tells us that you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant bachelor buttons in Rio Vista is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant bachelor buttons and expect a good harvest is probably October. If you wait any later than that and your bachelor buttons may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your bachelor buttons indoors.

Last Frost Date

The average date of last frost is February 15 in Rio Vista. You should expect an average low temperature of 25°F in the coldest months of winter.

Remember that USDA zone info for Rio Vista is not always accurate and the actual date of last frost is different every year. Since half of the time in Rio Vista you get surprised by a frost after February 15 be ready to cover your bachelor buttons if you have a surprise late frost.

USDA Zone Info for Rio Vista

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Rio Vista

You may be interested in your other planting guides for Rio Vista.